In-plane magnetization of an ultrathin film of Fe3O4(111) grown epitaxially on Pt(111)

摘要

The magnetic properties of an eight-monolayer Fe3O4(111) film grown epitaxially on Pt(lll) have been studied by the magneto-optic Kerr effect (MOKE) and conversion electron Mossbauer spectroscopy. The MOKE results indicate that a saturation of the magnetization is achieved with a field of about 500 Oe. In zero field the magnetization remains saturated. Apart from a paramagnetic contribution of 11%, which is interpreted as originating from the interface layer, the Mossbauer spectrum is identical to that of bulk Fe3O4. Furthermore, the data indicate that all the magnetic moments are in the plane of the film. [S0163-1829(98)50642-X]. [References: 21]